Partitioning with Disk Druid or Fdesk What is best and why?
 

I m just trying to learn linux.When I try to install OS need Partitioning with Disk Druid or Fdesk What is best and why?

I don't Partition my system yet.I will do after better reply

Thank you

GParted Live CD.
http://gparted.org/livecd.php

Usually the distributions aimed at beginners have their own partitioner in the installation routine, so there is no need for extra tools.
If you still want to use a different partitioner use the one you are familiar with, ir doesn't matter. The only partitioner I can not recommend is cfdisk, since it still misaligns partitions on SSDs and Advanced Format HDDs by default.